From aef4605f7c42df222761f6735375f499586d9d25 Mon Sep 17 00:00:00 2001 From: Jeff McGee Date: Thu, 12 Mar 2015 10:52:08 -0700 Subject: lib: Add media spin The media spin utility is derived from media fill. The purpose is to create a simple means to keep the render engine (media pipeline) busy for a controlled amount of time. It does so by emitting a batch with a single execution thread that spins in a tight loop the requested number of times. Each spin increments a counter whose final 32-bit value is written to the destination buffer on completion for checking. The implementation supports Gen8, Gen8lp, and Gen9. v2: Apply the recommendations of igt.cocci. Signed-off-by: Jeff McGee Tested-by: Lei Liu Signed-off-by: Thomas Wood --- lib/intel_batchbuffer.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'lib/intel_batchbuffer.c') diff --git a/lib/intel_batchbuffer.c b/lib/intel_batchbuffer.c index 1aa4ec34..a1b0643f 100644 --- a/lib/intel_batchbuffer.c +++ b/lib/intel_batchbuffer.c @@ -40,6 +40,7 @@ #include "rendercopy.h" #include "media_fill.h" #include "ioctl_wrappers.h" +#include "media_spin.h" #include @@ -788,3 +789,26 @@ igt_fillfunc_t igt_get_gpgpu_fillfunc(int devid) return fill; } + +/** + * igt_get_media_spinfunc: + * @devid: pci device id + * + * Returns: + * + * The platform-specific media spin function pointer for the device specified + * with @devid. Will return NULL when no media spin function is implemented. + */ +igt_media_spinfunc_t igt_get_media_spinfunc(int devid) +{ + igt_media_spinfunc_t spin = NULL; + + if (IS_GEN9(devid)) + spin = gen9_media_spinfunc; + else if (IS_BROADWELL(devid)) + spin = gen8_media_spinfunc; + else if (IS_CHERRYVIEW(devid)) + spin = gen8lp_media_spinfunc; + + return spin; +} -- cgit v1.2.3